We have a 2007 Doble multijet, it was smoking white smoke so went to garage, they had it for over six months without touching it, got it recovered to another garage because it wont start its now coming up with fault codes P0236 air supply circuit anomoly, P2264 water in diesel filter sensor, P0335 engine speed signal. Does anyone have any ideas why it wont start.

What garage did you take it to? I'd quite like to avoid them!

As for not starting, contaminated fuel? (just a guess, stab in the dark really)

Did it start before it was in the garage for 6 months? If so then what have they done to it??!!